Feed-water heater



Aug 6, 1929. w Q DUFFY 1,723,771

FEED WATER HEATER Fiiea July 25, 1927 2 Sheets-Sheet I NVENTOR. 5?

m ATTORNEY.

, Aug. 6, 192 9.

c. G. DUFFY FEED WATER HEATER Filed July 25, 192'? 2 Sheets-Sheet 2 INVENTOR #3 ATITORNEY m1 quicklyheateglwlto Of-i its h ughly Cleaned; f wscale flg invention,

-f i0nt,e1evatio partly? and partly broken laiwajyq 1 5 wuvieWn-f he M1163 valves 11',

spec tiwzely Connected l the outlet pipe 11 of the receptacle 9, and

-' the first pipe of the series, 33 is connected 25, 27, 29 and 31 disposed and fastened to the under side of the baffle plate 1-6.

The chamber is one of an upper rear row comprising the chambers 20, 22, 24, 26,

. 2s, 30 and s2.

- and 2, for arresting cinders.

The front end of the pipe 34 is connectedto the rear side of the chamber 21 and its rear end is connected to the bottom of the chamber 22, to which is also connected the u per rear end of the pipe .35, the front end 0? which is connected to the rear of the chamber 23. The remainder of the pipes are similarly connected to the remaining chambers, the last pipe 44'having its rear upper end connected to the bottom of the last chamber 32.

' The last chamber 32 has connected to its rear side a T 45, Fig. 3, to which are connected two conductors 46 and 47 which conmet with the space 2 of the boiler and which are respectively provided with check valves 48 and 49, which open toward the space 2.

' *The baffle plate '16 closes the space at and between the lower-ends of the arms of the receptacle 9, and at the rear edges of said arms. Between said arms at the front edges thereof may be mounted a screen 50, Figs. 1

The pipes 33 to 44 inclusive are disposed below .andat the rear of the battle plate 16, so hatthe heated gaseous products of combustion discharged from the flue tubes 5 strike said pipes, so as to heat the water therein.

The 'nozzle 6 extends through the bafile plate 16 and discharges between the arms of the receptacle 9, thus heating the water in said receptacle, which is also heated by the gaseous products passing upwardly and rearwardly over the apron 19.

The water entering the receptacle 9 through the conductors 10, will be heated and will pass through the outlet pipe 11 into the chamber 20, thence through the pipe 33 into the chamber 21, thence by the pipe 34 into the chamber 22, then by the pipe 35 into chamber 23, and so on through theremaining connected pipes and chamhere until it reaches the last chamber 32 through the last pipe 44, from which last chamber it will pass by the T 45 into and through the conductors 46 and 47 into the steam and water space 2, at which time it- Will have become highly heated.

-;In order-that the pipes 33 to 44 inclusive may beeasily' cleaned of sediment, scale or rust, the tops of the chambers 20, 22, 24, 26, 28,30, and 32, and the fronts of the chambers 21, 23, 25,27, 29, and 31 are provided in their front sides with clean out openings 51, Figs. 4 and 5, which respectively aline with the adjacent ends of the pipes connected with said chambers.

Respectively fitted in the holes 51 are removable screw plugs 52. By removing the adjacent plugs in the holes alining with the ends of the pipes, access may be had to the interior of each pipe through the ends thereof.

I do not limit my invention to the structure shown and described, as many modifications, within the scope of the appended claims, may be made without departing from the spirit of my invention.

What I claim is 1. In a feed water heater, the combination with a boiler shell having a smoke box and a steam and water space, and an exhaust nozzle in the smoke box, of an unverted U shaped water heating receptacle in said smoke box having an inlet for water and an outlet for water and having an opening through its transverse portion between its arms alined with said nozzle, water conducting means connecting said outlet with said steam and water space, and a plate closing the space between said arms at the lower ends and rear edges thereof, and forming with said U shaped receptacle a chamber of which said arms are the side walls of said chamber.

2. In a feed water heater, the combination with a boiler shell having a smoke box and a steam and water space, and an exhaust nozzle in said smoke box, of an inverted U shaped water heating receptacle in said smoke box having in its transverse portion between its arms an opening alined with said nozzle, a bafile plate through which sai d nozzle extends disposed between said arms, said plate extending between the lower ends and rear edges of said arms, and water conducting means connected with said outlet and with said steam and water space.

3. In a feed water heater, an inverted U shaped water heating receptacle having an inlet and an outlet for water, and having between its arms through its transverse portion an opening for conveying exhaust steam therethrough, a baffle plate disposed between the said arms at the lower ends and rear edges thereof, and conducting means connected with said outlet and adapted to be connected with the steam and water space of a boiler and having a sinuous portion below and at the rear of said baffle plate.

4. In a feed water heater, the combination with a boiler shell having a smoke box, an exhaust nozzle therein, and a steam and water space, of an inverted U shaped water heating receptacle having an inlet and an outlet for water, and having between its arms through its transverse portion an opening alining with said nozzle, a baille plate 

